Above the gleaming white fishing town of Port de la Selva, in the province of Girona, stands the Benedictine monastery of Sant Pere de Rodes constructed into the side of the Verdera mountain.

Originally set up by the Rois de Majorque as a defence system to protect the Roussillon from invaders, the tours de signaux (signal towers) allowed information to be passed quickly around the region, using fire and smoke signals.